Below is the rating system I use when review books. I also (try) rate every book as an individual entity, separate from the genre, series, or author. That being said, if another book influences the rating of a book, I will note it in my review and why.
Similarly, I do consider the genre when rating the books. Middle-grade books tend not be rated as harshly if more tropes are used or if the plot is predictable (though this will be addressed) and smutty books probably won’t get more than a 3-Star rating. This just means that a 4-Star Middle-Grade read is a great middle-grade read, but may not be as good as a 4-Star YA read, for example. Although if a book is exceptionally good (or bad) I will adjust my rating accordingly and address it.
Also, while I do have a “system” in place, the first most important things I consider when reviewing a book are if I liked it, if my audience would like it, and are there important or problematic elements that need to be considered.
My rating system:
✨ – Represents a partial star, used when needed.
⭐️ – 1 star. DNFed. Hated it. Do not recommend.
⭐️⭐️ – 2 star. Barely got through it. Didn’t like it. Read with caution.
⭐️⭐️⭐️ – 3 star. Finished it. Meh. Wasn’t awful, wasn’t great. I liked it enough to finish it. Check it out, you may like it. Something held me back from really enjoying it.
⭐️⭐️⭐️⭐️ – 4 star. Liked it a lot, some (small) problems kept it from being 5 stars. Still (highly?) recommended.
⭐️⭐️⭐️⭐️⭐️ – 5 star. LOVED it. Read it now. Obsessed.